Aptitude Hack#9(4-3-19)

Question:

An automobile plant contracted to buy shock absorbers from two suppliers X and Y. X supplies 60% and Y supplies 40% of the shock absorbers. All shock absorbers are subjected to a quality test. The ones that pass the quality test are considered reliable. Of X’s shock absorbers, 96% are reliable. Of Y’s shock absorbers, 72% are reliable. The probability that a randomly chosen shock absorber, which is found to be reliable, is made by Y is

A)0.288

B)0.334

C)0.667

D)0.720

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Aptitude Hack#6(1-3-19)

Question:

Suppose a fair six-sided dice is rolled once. If the value on the dice is 1, 2, or 3, the die is rolled a second time. What is the probability that the sum total of values that turn up is at least 6?
A 10/21
B 5/12
C 2/3
D 1/6

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